Grate for pulverizing-machines.



UNITED STATES Patented June as, 1904.

PATENT O FICE.

AUGUST SCHOELLHORN AND HERMAN S. ALBRECHT, OF ST. LOUIS,

V MISSOURI.

GRATE FOR PULVE'RIZING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 763,639, dated June 28, I904.

Application tiled April 13, 1903. Serial 110,152,312. (Nomodell) To all whom it may concern:

Be it known that we, AUGUST SoHoELLI-IoR and HERMAN S. ALBRECHT, citizens of the United States, residing in the city of St.Louis, in the State of Missouri, have invented. certain new and useful Improvements in Grates for Pulverizing-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to pulverizing-machines.

In pulverizing-machines for clay and the like the material works from the center toward the sides of the casing, and consequently is not caught by the hammers. Further, some of the material becomes caked in the corners between the sides of the casing and the unperforated edges of the grates; and it' is the object of our invention to provide means for eliminating both of these disadvantages.

In the drawings forming part of this specification, Figure l is a perspective view showing a section of the grate forming a part of our machine and part of another section in dotted lines. Fig. 2 is a vertical transverse section of the grate. Fig. 3 is a detail vertical transverse section of our pulveriZing-machine.

Referring more particularly to the drawings, 1 designates one of the sections of the grate, of which there may be any desired number. Each section is composed of a rectangular casting having two rows of diagonal slots 2, which on eachside of the center of the grate are inclined forwardly from the adjacent edge toward the center, whereby the material when it strikes the slots (due to the movement of the rotary heater) is carried to the center of the grate instead of to the sides between the sides of the casing and the sides of the grate and between the bottom of the grate and the groove, band, or other support upon which the grate rests.

Having thus described our invention, what we claim is- The combination of a grate formed with slots inclined from each side toward the middle in the direction of travel of the material, and a revolving beater mounted above the grate.

AUGUST SCHOELLHORN. .HERMAN S. ALBRECHT. In presence of p NELLIE V. ALEXANDER,

E. S. KNIGHT. 

